Centrifugal pump



FIG. 1 is a top perspective view of a centrifugal pump, showing our new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a right view thereof;

FIG. 7 is a front view thereof; and,

FIG. 8 is a back view thereof.

The portions of the article shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a centrifugal pump, as shown and described. 